Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor or nurse immediately if any of the following side effects occur:

Less common

Agitation

coma

confusion

decreased urine output

depression

dizziness

headache

hostility

irritability

lethargy

muscle twitching

nausea

rapid weight gain

seizures

stupor

swelling of the face, ankles, or hands

unusual tiredness or weakness

Rare

Abdominal or stomach pain

black, tarry stools

bladder pain

bleeding gums

blood in the urine or stools

blurred vision

changes in skin color

chest pain

chills

clay-colored stools

cloudy urine

cough or hoarseness

coughing up blood

dark urine

difficult, burning, or painful urination

difficulty with breathing or swallowing

difficulty with speaking

dilated neck veins

dizziness, faintness, or lightheadedness when getting up suddenly from a lying or sitting position

double vision

enlarged abdomen or stomach

extreme fatigue

fainting

fast or slow heartbeat

feeling of warmth

fever

frequent urge to urinate

inability to move the arms, legs, or facial muscles

inability to speak

increased menstrual flow or vaginal bleeding

increased sweating

irregular breathing

irregular heartbeat

itching

joint pain, stiffness, or swelling

lightheadedness

loosening of the fingernails

loss of appetite

loss of strength or energy

lower back or side pain

muscle pain or weakness

nosebleeds

numbness, tingling, pain, or weakness in the hands or feet

pain

pain, tenderness, or swelling of the foot or leg

paralysis

pinpoint red spots on the skin

prolonged bleeding from cuts

rapid, shallow breathing

rash

red or black, tarry stools

red or dark brown urine

redness of the face, neck, arms, and occasionally, upper chest

shortness of breath

slow speech

sore throat

sores, ulcers, or white spots on the lips or in the mouth

sudden shortness of breath or troubled breathing

sweating

swelling of the fingers, feet, or lower legs

swollen glands

tightness in the chest

troubled breathing

unpleasant breath odor

unusual bleeding or bruising

unusual weak feeling

vomiting of blood

weight gain

wheezing

yellow eyes or skin

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: